National Slag Association Iron and Steel Slag Products National Slag Association 2019-01-30 | Since 1918, The NSA has promoted the use of Blast Furnace and Steel Furnace Slag. Blast Furnace slag has been called the "All-Purpose Aggregate" as it can be used in all construction applications as either a normal weight or lightweight (expanded or pelletized) aggregate depending on how it was formed and processed. Blast Furnace Slag is also quickly quenched by water or air to produce Granulated Blast Furnace Slag.
NSA 2018 Annual Meeting Recap National Slag Association 2019-01-30 | In 1918 the National Slag Association was formed to promote the use of Iron and Steel furnace slag as high quality construction aggregate. In 2018 we celebrated our centennial at the Gaylord National Resort in Fort Washington, Maryland.
